(19)

(11)

EP 1 121 230 A1

(12)

(43) Date of publication: 08.08.2001 Bulletin 2001/32 (21) Application number: 98917164.0 (22) Date of filing: 27.04.1998

(51) International Patent Classification (IPC)7: B27L 7/00 (86) International application number: PCT/FI9800/366 (87) International publication number: WO 9848/988 (05.11.1998 Gazette 1998/44)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI SE Designated Extension States: LT LV RO (30) Priority: 29.04.1997 FI 971824 09.07.1997 FI 970324 U (71) Applicant: Sarvela, Vilho Juhani 2110 Espoo (FI)	(72) Inventor: Sarvela, Vilho Juhani 2110 Espoo (FI) (74) Representative: Laitinen, Pauli Sakari  Patentti-Laitinen Oy,P.O. Box 29 02771 Espoo 02771 Espoo (FI)